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Agronomic performance of experimental white-fleshed sweet potato genotypes in commercial crops aiming new cultivars

Grant number: 20/15974-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): February 01, 2021
Effective date (End): December 31, 2021
Field of knowledge:Agronomical Sciences - Agronomy - Crop Science
Principal researcher:André Ricardo Zeist
Grantee:Guilherme José Almeida Oliveira
Home Institution: Faculdade de Ciências Agrárias. Universidade do Oeste Paulista (UNOESTE). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil

Abstract

The sweet potato root [Ipomoea potatoes (L) Lam] is an important dietary supplement for the eradication of nutritional deficiencies in population groups with a calorie or nutrient deficiency. In the state of São Paulo, in the last ten years, more than doubled the planted area and tripled production. The state is the second largest producer of sweet potatoes, with the West Paulista region being the main producing region. In this region, despite the considerable economic and social relevance of culture, for more than a decade the predominant genotypes have been obsolete, of low productivity and which do not serve the most demanding national and international market. To strengthen the cultivation of sweet potatoes, an important step is the emergence of new cultivars with superior productive potential. In this sense, the objective is to evaluate the agronomic performance of experimental white-fleshed sweet potato genotypes in commercial crops aiming at launching new cultivars, thus seeking to obtain plants that meet the needs of producers in the West Paulista region and national demand. The experimental genotypes UZBD-L1-04 and UZBD-L5-29 will be evaluated together with the commercial controls 'Ligeirinha Paulista', 'Canadense' and 'INIA Arapey', in a randomized block design with four replications. The experiments will be installed in four municipalities in the West Paulista region, being Presidente Prudente-SP (site 1), Emilianópolis-SP (site 2), Tarabai-SP (site 3) and Álvares Machado-SP (site 4), in crops commercial activities of rural producers who grow sweet potatoes for at least 15 years. The experiments at sites 1 and 2 will be installed in January 2021 (summer - autumn cycle); and from sites 3 and 4 in May 2021 (autumn - spring cycle). Parameters indicative of productivity and physical quality of commercial roots will be evaluated. Additionally, through an evaluation form, participatory breeding will be used, where producers or technicians responsible for commercial crops will give their opinion. It is believed that the development and selection of new sweet potato cultivars is the way to generate more productive plants and adapted to the growing conditions of the main producing regions in Brazil.